﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace QuanLiDiemCap2
{
    public class ValidateClass
    {
        public static bool IsNumber(string value)
        {
            // Return true if this is a number.
            int number1;
            return int.TryParse(value, out number1);
        }
    }
}
